To answer your question, Bitcoin is NOT money. “ Money” must be stable in value...and....keep in mind a recent high profile criminal trial ( no link) resulted in .gov being able to recoup the Bitcoin ( Treasury was able to hack into it to recover the “ illegal money”.
“Back by the government” is actually a negative, not a positive. It hasn’t saved any of the many fiat currencies that have hyperinflated in the last century despite being backed by governments.
On the contrary politicians are strongly incentivized to degrade the value of their currency through deficit spending and attending inflation to make reduce government debts.
Government currency has no controls on scarcity, as we are seeing in spades lately. Whereas cryptocurrency typically has a rock solid definition of its scarcity. That alone makes it tremendously more valuable. While there will be volatility along the way, the simple difference in scarcity is a relentless truth that will destroy government fiat in the years ahead.
They’ve tried bans (and that will increase in the desperate years for fiat ahead), but they will work the way a sieve holds water. The bans will simply confirm to people that government fiat is worthless. If you need to be coerced to use something, that tells you it’s not in your best interest to be using it.
Governments could try living within their means, but I doubt they can make the radical adjustments needed in time. Too much political pain. But once fiat hyperinflates and crypto is dominant they will have no choice but to balance their budgets and justify their taxation honestly. That will be a good thing in the long run.